Grand Chemical
Optical Brightener 4BK
Optical Brightener 4BK is supplied by Shandong Grand Chemical for cotton, cellulose, chinlon, viscose, T/C. Stilbene derivative. Use the specification table below; figures that are not printed on the source product page are marked TBC or omitted.
cottoncellulosechinlonviscoseT/CT/Rlinenwoolsilkpaper
Specification
| Chemistry | Stilbene |
|---|---|
| Water insolubles | ≤0.5% |
| Moisture | ≤5% |
| pH window | 6–12 |
| Note | CI and CAS are not printed on the source product page |
| Appearance | Light yellow powder |
| Ionicity | Anionic |
| Dosage (source) | Exhaust 0.1–0.8% owf. |
| Packing | 25 kg or 30 kg drum or carton |
| Synonyms on source page | Synowhite 4BK, KISCO 4BK, Uvitex BHT |
What this grade is for
- Broad cellulosic and protein-fiber list including T/C and T/R blends.
Questions we actually get
What is 4BK used for?
Optical Brightener 4BK is listed for cotton, cellulose, chinlon, viscose, T/C, T/R, linen, wool, silk, paper.
Do you publish a price?
No. The live catalog does not list prices. Ask for a quote with your polymer or fiber, process temperature and monthly volume.
Can I get TDS / COA / SDS?
Yes — request the current document set by WhatsApp or email. This site does not host downloadable PDFs because the source site does not publish a document library.
